public Class QuantizationError

Class Inheritance

extends Object
implements MapDataVisualization

java.lang.Object
org.apache.commons.math3.ml.neuralnet.twod.util.QuantizationError

All Implemented Interfaces

org.apache.commons.math3.ml.neuralnet.twod.util.MapDataVisualization

Imports

org.apache.commons.math3.ml.neuralnet.MapUtils, .Neuron, org.apache.commons.math3.ml.neuralnet.twod.NeuronSquareMesh2D, org.apache.commons.math3.ml.distance.DistanceMeasure

Computes the quantization error histogram. Each bin will contain the average of the distances between samples mapped to the corresponding unit and the weight vector of that unit.

Since: 3.6

Field Summary

Modifier and Type	Field and Description
private final DistanceMeasure	distance Distance.

Constructor Summary

Access	Constructor and Description
public	QuantizationError(DistanceMeasure Distance. distance)

Method Summary

Modifier and Type	Method and Description
public double[][]	computeImage(NeuronSquareMesh2D Map. map, Iterable<double[]> Data. data) Implements org.apache.commons.math3.ml.neuralnet.twod.util.MapDataVisualization.computeImage. Creates an image of the `data` metrics when represented by the `map`.

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

Field Detail

distance	back to summary
private final DistanceMeasure distance Distance.

Constructor Detail

QuantizationError	back to summary
public QuantizationError(DistanceMeasure distance) Parameters distance:DistanceMeasure Distance.

Method Detail

computeImage back to summary

computeImage	back to summary
public double[][] computeImage(NeuronSquareMesh2D map, Iterable<double[]> data) Implements org.apache.commons.math3.ml.neuralnet.twod.util.MapDataVisualization.computeImage. Doc from org.apache.commons.math3.ml.neuralnet.twod.util.MapDataVisualization.computeImage. Creates an image of the `data` metrics when represented by the `map`. Parameters map:NeuronSquareMesh2D Map. data:Iterable<double[]> Data. Returns:double[][] a 2D-array (in row major order) representing the metrics.

public double[][] computeImage(NeuronSquareMesh2D map, Iterable<double[]> data)

Implements org.apache.commons.math3.ml.neuralnet.twod.util.MapDataVisualization.computeImage.

Doc from org.apache.commons.math3.ml.neuralnet.twod.util.MapDataVisualization.computeImage.

Creates an image of the data metrics when represented by the map.

Parameters

map:NeuronSquareMesh2D: Map.
data:Iterable<double[]>: Data.

Returns:double[][]

a 2D-array (in row major order) representing the metrics.